Orange Marmalade

Preparation:
Prick the oranges with the help of a fork and soak them in cold water for 24 hours, changing the water 2-3 times. Next, peel the oranges, trying to eliminate the white part. Cut the orange peels into small pieces and burn them in boiling water for at least 4 times for about 5 minutes, changing the water from time to time. Cut the orange pulp into cubes and place in a large pot with the pieces of orange peels and sugar. Boil for about 45 minutes over medium heat, mixing occasionally. After about 30 minutes of cooking, blend with the mixer and then continue to cook. Pour the boiling marmalade in glass jars with airtight seal.